window_switcher_button.h revision 72a454cd3513ac24fbdd0e0cb9ad70b86a99b801 
1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_CHROMEOS_STATUS_WINDOW_SWITCHER_BUTTON_H_
6#define CHROME_BROWSER_CHROMEOS_STATUS_WINDOW_SWITCHER_BUTTON_H_
7#pragma once
8
9#include "base/scoped_ptr.h"
10#include "chrome/browser/chromeos/status/status_area_button.h"
11#include "chrome/browser/ui/browser_list.h"
12#include "chrome/common/notification_observer.h"
13#include "views/controls/button/menu_button.h"
14#include "views/controls/menu/view_menu_delegate.h"
15
16namespace chromeos {
17
18class StatusAreaHost;
19
20// The window switcher button in the status area.  This button allows
21// the user to move to the next window if they click on the icon.
22class WindowSwitcherButton : public StatusAreaButton,
23                             public views::ViewMenuDelegate,
24                             public BrowserList::Observer {
25 public:
26  explicit WindowSwitcherButton(StatusAreaHost* host);
27  virtual ~WindowSwitcherButton();
28
29 private:
30  // Updates the status of the button based on the state of the
31  // browser list.
32  void UpdateStatus();
33
34  // BrowserList::Observer API
35  virtual void OnBrowserAdded(const Browser* browser);
36  virtual void OnBrowserRemoved(const Browser* browser);
37
38  // views::ViewMenuDelegate implementation.
39  virtual void RunMenu(views::View* source, const gfx::Point& pt);
40
41  StatusAreaHost* host_;
42
43  DISALLOW_COPY_AND_ASSIGN(WindowSwitcherButton);
44};
45
46}  // namespace chromeos
47
48#endif  // CHROME_BROWSER_CHROMEOS_STATUS_WINDOW_SWITCHER_BUTTON_H_
49